She doesn't know____to go or to stay.A.if B.whether C.what D.where 但是a选项错在哪?

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• She doesn't know____to go or to stay.A.if B.whether C.what D.where 但是D选项错在哪?
• She doesn't know____to go or to stay.A.if B.whether C.what D.where 但是D选项错在哪?我想知道D选项在语法上有没有错误?
• She doesn't know____to go or to stay.A.if B.whether C.what D.where 但是a选项错在哪?
• She doesn't know____to go or to stay.A.if B.whether C.what D.where 但是a选项错在哪?
• She doesn't know____to go or to stay.A.if B.whether C.what D.where 但是D选项错在哪?我想知道D选项在语法上有没有错误?
• Lily doesn't know()she and her friends can do to help the little boy（）parents have left their hometown for making moneyA that whoseB what thoseC waht whoD how who